Jeep commander fuses are good but fog lights will not work

SOURCE: 98 Jeep Cherokee Fog lights

It's definitely the switch...I bought two of 'em so far...known bug. I don't use the fog lights as much anymore , but the "Airtex" oem equivalent switch from Rockauto seems to be holding up well. If you dissamble your broke switch you'll probably see evidence that it is beginning to melt and theres alot, maybe too much, grease, which may or may not have been the cause of the bad, heating contacts inside switch.
If I remember right, even though the foglights have a relay there is still full amperage going through the switch or something....don't qoute me on that last statement.

SOURCE: 1998 jeep grand cherokee limited fog lights don't work.

This means you have a short. I am assuming you are talking about the fog light fuse. Does this fuse blow whether the fog lights are off? or just when turned on?

If the fuse blows when the switch is off the switch is bad too. If the fuses only blows when the switch is turned on you have a short in the wiring or bulb.

I don't know if you have test equipment so first I would say to remove both driving bulbs from their sockets and see if there is corrosion. Fix that problem if there is corrosion.

Then install a fuse without the bulbs and see if the fuse blows. If you have a test light you can bridge the fuse panel without putting a fuse in. If there is a connection you have a hot wire grounding. If there is no problem install one light, fuse or bridge the fuse holder and see if 1 light works. Try each side. This way you can isolate the problem. Then visibly inspect wiring.

ZJ Limited

• 17989 Answers
• Posted on Aug 11, 2009

SOURCE: need a fuse box diagram to wire in fog lights

Fog lamps are installed on the front bumper. The switch is located to the left of the steering column on the dash panel. The fog lamps are turned off by the circuit relay when the high beam driving lamps are turned on. The circuit relay is located on the right front wheelhouse panel near the blower motor.

Good luck, and remember rated this help.
Removal & InstallationFog Lamp Element
See Figure 1

Fig. 1: Exploded view of a fog lamp assembly

1. Remove the lamp stone shields, the four bezel attaching screws, and the bezel.
2. Remove the reflector assembly from the lamp body.
3. Remove the bulb holder from the assembly. Remove the element from the bulb.

1. Installation is the reverse of removal.

1. Position the vehicle on a level surface, facing a wall approximately 25 feet away. Remove the lamp stone shields and loosen the adjustment nuts.
2. Turn the fog lamps ON and adjust as follows:
   1. Distance between the light beam centers should be equal to the distance between the lamp assemblies on the bumper.
   2. Height of the light beams on the wall should be 4 inches less than the center of the lamp assemblies when mounted on the bumper.
      
3. Install all previously removed items after turning OFF the fog lamps.

SOURCE: fog lights don't work

In my 99 Cherokee it was the switch itself. Bought one online for about 20 bucks and it took about 5 minutes to replace.

SOURCE: fog lights will not work on 2001 jeep wrangler

check your grounds on your fog lights make sure they have a good ground.GOOD LUCK.